Q54 / 150 · MHT CET 2021 (22 Sep Shift 2) · Mathematics
Following data shows the information about marks obtained in Physics, Chemistry, Mathematics and Biology by 100 students in a class. Then 
subject shows the highest variability in marks
subject shows the highest variability in marks
- AMathematics
- BChemistry
- Correct answerCBiology
- DPhysics
Solution
$\begin{aligned} & \text { We know that Coefficient of Variation }=\frac{\text { Standard Deviation }}{\text { mean }} \\ & \therefore \quad(\text { C.V. })_{\text {Physics }}=\frac{3}{20}=0.15 \text { and }(\text { C.V. })_{\text {Chemistry }}=\frac{2}{25}=0.08 \\ & \left.\text { (C.V. })_{\text {Mathematics }}=\frac{4}{23}=0.174 \text { and (C.V. }\right)_{\text {Biology }}=\frac{5}{27}=0.185\end{aligned}$
Hence, the correct answer is option: 'C'.